MODEL TEST RESEARCH ON FAILURE FORMS AND FAILURE MECHANISM OF ANCHOR BOLTS UNDER TOP EXPLOSION
WANG Guangyong1，2，GU Jincai3，CHEN Anmin3，XU Jingmao3
(1. Opening Project of Key Laboratory of Deep Mine Construction，Henan Polytechnic University，Jiaozuo，Henan 454000，China；2. School of Civil Engineering，Henan Polytechnic University，Jiaozuo，Henan 454000，China；3. The Third Scientific Research Institute of the Corps of Engineers，General Staff of PLA，Luoyang，Henan 471023，China)
Abstract：Based on anti-explosion model test，the failure forms and failure mechanism of the anchor bolts are studied. According to the results of the model tests，anchor bolts under top explosion have four kinds of failure forms，which include compression bending failure，shearing failure，compression bending and tensile failure with shedding of screw cap，and turnover of backing plate. Because the pressure stress is disturbed unevenly under top explosion，which leads to product a few shearing cracks in two sides of arch foot，the four kinds of failure forms are produced. In accordance with failure forms of anchor bolts，technologies with enhancing the explosion resisting capacity of anchor bolts are proposed from the aspects of body of anchor bolts，screw cap and backing plate.
王光勇1，2，顾金才3，陈安敏3，徐景茂3. 顶爆作用下锚杆破坏形式及破坏机制模型试验研究[J]. 岩石力学与工程学报, 2012, 31(1): 27-31.
WANG Guangyong1，2，GU Jincai3，CHEN Anmin3，XU Jingmao3. MODEL TEST RESEARCH ON FAILURE FORMS AND FAILURE MECHANISM OF ANCHOR BOLTS UNDER TOP EXPLOSION. , 2012, 31(1): 27-31.
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2012, Vol. 31 
